Breakthrough high-speed HPV (ski treadmill with storage)
Breakthrough high-speed HPV (ski treadmill with
storage)
[3818]- 12.01.2018
Author: David Judbarovski, principle
inventor, retired engineer, Israel
It is a new kind of HPV (human powered
vehicle) with transition of ski treadmill to power a generator and bike-type wheels. An excellent
aerodynamic shield can be used without designing problem. A pilot power is
about 430 kcal-h ordinary in that case for a long time. If 50% of its energy
being stored by a small battery and periodically used for travelling, and a
pilot can relax of 50% of the route time, the average speed is about 45 km/h, even
if a rugged terrain and 25 kg cargo.
Because a human daily energy for a long
work being about 3500 kcal ordinary, it is enough for about 14 hours of the
route of 630 km long. It is a noiseless transport and can be used as for military
missions and for different civil applications and can compete with cars and
trains.
We can name that transport means as STVS (ski
treadmill vehicle with storage), or [stevs] or more shortly as Judbarovki
vehicle (JV), or [dzheiv].
Really, F (force of a pilot) ~= 0.01 (friction
losses) * 100 kg (weight of pilot with a cargo) + 0.22 (aerodynamic factor)
*1.3 (air density) * 0.7 m2 (cross-section, while = 0.5 m2 if the pilot
relaxing) * V^2/ * 0.5 (here the V m/s is the JV velocity). = 10 + 0.1 *V^2
So W = F * V (Watt) = 10 *V + 0.1 * V^3 if work and = 10 *V + 0.07
if relax.
If 50% relax with 70 kcal-h, so in sum = (430
+ 70) /2 = 250 kcal-hours = 280 watt in average, and 430 Watt if work
So V = 12 m/s = 43 km/h if work, and 47
km/h if relax.
~3500 kkal = ~14,000 kJ/ (0.28 kW * 3600
sec) = 14 hours.
And (14/2) * (43 + 47) ~= 630 km with
average V ~= 50 km/h
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